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Hard-sphere-like dynamics in highly concentrated alpha-crystallin suspensions
- Source :
- Physical Review E. 97
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- The dynamics of concentrated suspensions of the eye-lens protein alpha crystallin have been measured using x-ray photon correlation spectroscopy. Measurements were made at wave vectors corresponding to the first peak in the hard-sphere structure factor and volume fractions close to the critical volume fraction for the glass transition. Langevin dynamics simulations were also performed in parallel to the experiments. The intermediate scattering function f(q,τ) could be fit using a stretched exponential decay for both experiments and numerical simulations. The measured relaxation times show good agreement with simulations for polydisperse hard-sphere colloids.
- Subjects :
- 0301 basic medicine
030103 biophysics
Materials science
Relaxation (NMR)
01 natural sciences
Molecular physics
Condensed Matter::Soft Condensed Matter
03 medical and health sciences
Colloid
Dynamic light scattering
Volume (thermodynamics)
0103 physical sciences
Exponential decay
010306 general physics
Glass transition
Langevin dynamics
Structure factor
Subjects
Details
- ISSN :
- 24700053 and 24700045
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Physical Review E
- Accession number :
- edsair.doi.dedup.....c2814e95e4654bfdc26fa93faee4eb40